/*
 * Copyright 2011 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package tw.idv.gasolin.pycontw2012.ui;

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;

import tw.idv.gasolin.pycontw2012.R;

/**
 * A {@link BaseActivity} that simply contains a single fragment. The intent
 * used to invoke this activity is forwarded to the fragment as arguments during
 * fragment instantiation. Derived activities should only need to implement
 * {@link tw.idv.gasolin.pycontw2012.ui.BaseSinglePaneActivity#onCreatePane()}
 * .
 */
public abstract class BaseSinglePaneActivity extends BaseActivity {
    private Fragment mFragment;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_singlepane_empty);
        getActivityHelper().setupActionBar(getTitle(), 0);

        final String customTitle = getIntent().getStringExtra(
            Intent.EXTRA_TITLE);
        getActivityHelper().setActionBarTitle(
            customTitle != null ? customTitle : getTitle());

        if ( savedInstanceState == null ) {
            mFragment = onCreatePane();
            mFragment.setArguments(intentToFragmentArguments(getIntent()));

            getSupportFragmentManager().beginTransaction()
                .add(R.id.root_container, mFragment)
                .commit();
        }
    }

    /**
     * Called in <code>onCreate</code> when the fragment constituting this
     * activity is needed. The returned fragment's arguments will be set to the
     * intent used to invoke this activity.
     */
    protected abstract Fragment onCreatePane();
}
